Winder, and methods for stratified winding, of wire onto a dynamo-electric core

ABSTRACT

A winder for winding wire onto coil supports of dynamo-electric cores with translational, rotational, and stratification motions with respect to a central longitudinal axis of the dynamo-electric core is provided. The rotational motion may preferably be provided by the rocking motion of a gear sector. The stratification motion may preferably be provided by the implementation of a spiral groove. The spiral groove preferably shares the same longitudinal axis as the winder. The rotation of the spiral groove preferably creates a relative motion between the groove and the needles, thereby producing the radial stratification motion of the needles. Additionally, the winder includes a motor arrangement which is programmable and controllable. The motor arrangement may also provide a dampening effect to limit unwanted stratification motion.

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application claims priority from U.S. ProvisionalApplication No. 60/234,811, filed Sep. 22, 2000.

BACKGROUND OF THE INVENTION

[0002] The present application relates to winding coils of wire ontopoles of dynamo-electric cores. More particularly, the presentapplication relates to an improved method for generating translational,rotational, and stratification motions in the winding of the wires.Stratification motions—i.e., motions that distribute the winding needlein a radial direction—are performed to regularly distribute the turnsalong the height of a pole in a dynamo-electric component eitherinwardly toward the center of the core, or outwardly, from the center ofthe core.

[0003] Wire coils for some cores may be wound using wire deliveringneedles moved in translational and rotational motion. Such motions andthe mechanisms for generating them are similar to those described inU.S. Pat. Nos. 4,858,835 and 5,484,114, in U.S. Provisional PatentApplication Nos. 60/148,473, filed Aug. 12, 1999, and 60/214,218, filedJun. 23, 2000, and in U.S. patent application Ser. No. 09/632,281, filedAug. 4, 2000, all of which are commonly assigned with the presentapplication. Each of the above identified patents are herebyincorporated by reference.

[0004] As described in the above-mentioned cases, a winding shaftcarries a wire dispensing needle or needles. During winding, the wiresare dispensed through the hollow interior of the winding shaft andneedle by the relative motion of the shaft with respect to the core.Such motions deliver tensioned wires and wind them around the poles toform the turns of the coil.

[0005] In view of the foregoing, it would be desirable to provide awinding apparatus with an improved method for generating rotational andtranslational movements of the shaft and needle while stratifying thewire along the poles of the dynamo-electric core.

SUMMARY OF THE INVENTION

[0006] Therefore, it is an object of the invention to provide a statorcore winding apparatus and methods preferably capable of rotational,translational, and stratification movements with respect to the poles ofthe dynamo-electric core. As mentioned above, this stratificationmovement may be considered a radial movement that moves the windingneedle along the radial extension of the poles. This stratificationallows for pre-determined placement of the wire in layered format.Pre-determined placement of the wire in layered format preferablyresults in deeper and denser winding of wire.

[0007] The winder according to the invention preferably includes aplurality of needles. Each needle dispenses a wire. The winder alsopreferably includes a translation assembly. The translation assemblyincludes a first member. The first member is preferably a winding shaftwhich may be substantially hollow. A second member is preferably coupledto the first member. The second member is preferably includes a drivetube and an end tube. The translation assembly is for producingtranslational movement of the first member and the needle parallel tothe longitudinal axis of the winder. The winder also includes a rotationassembly for producing relative rotational movement between the core andthe needle about the longitudinal axis. The rotation assembly mayinclude a gear sector which produces a rocking motion, thereby producingthe rotational movement.

[0008] The winder also includes a stratification assembly moveablycoupled to the second member. The stratification assembly causesrelative rotational movement between the second member and the firstmember. This relative rotational movement produces stratification—i.e.,radial—movement of the needle.

[0009] It should also be noted that the relative rotational movement issubstantially independent from the rotational movement produced by therotation assembly because each of the rotational movements are generatedindependently of one another. Thus, there are two different mechanismsby which rotation may be accomplished. Furthermore, the stratificationassembly preferably includes a spiral groove. The spiral groovepreferably shares the same longitudinal axis as the winder. Rotation ofthe spiral groove with respect to the needles creates relative motionbetween the groove and the needles. This relative motion causes thestratification motion of the needles.

[0010] Additionally, the winder includes a motor arrangement for turninga plurality of gears. The motor arrangement is preferably programmableand controllable with external feed backs such that the rotationimparted to the spiral groove may cause a controlled and predeterminedstratification motion. When the motor arrangement is not activated, itmay act as a brake to dampen or prevent accidental rotation. Accidentalrotations may cause unwanted stratification motion.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and other objects and advantages of the presentinvention will be apparent upon consideration of the following detaileddescription, taken in conjunction with the accompanying drawings, inwhich like reference characters refer to like parts throughout, and inwhich:

[0012]FIG. 1 is a partial sectional view of an embodiment of a winderaccording to the invention;

[0013]FIG. 2 is a partial sectional view of portion 118 of FIG. 1according to the invention;

[0014]FIG. 2a is a detailed view of a worm gear that can substitute forgear 214 of FIG. 2;

[0015]FIG. 3 is a partial sectional view of portion 126 of FIG. 1according to the invention; and

[0016]FIG. 4 is an axial view of a core and a partial view of the winderaccording to the invention taken from lines 4-4 of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

[0017] As described in the above-mentioned cases, coils are wound aroundpoles by using winding needles. Each needle dispenses wire onto aspecific pole. The wire turns of the coils preferably become stratifiedalong the pole. This means that each wire turn tends to occupy anindividual layer along the radial axis of a pole. The stratification issuch that the turns may be wound on layers progressing outwardly awayfrom the center of the dynamo-electric core—i.e., from longitudinal axis108 as shown in FIG. 1. Each turn is also preferably wound around thepole sides and across the opposite faces.

[0018] To begin winding of the coil, the needles are provided withtranslation strokes, parallel to the sides of the core and parallel tothe plane of the page. (Reference to the “page” as used herein indicatesthe plane of the drawing page of the FIGURES.). During these translationstrokes, the needle tips are partially inserted into the slots of thecore to place the wires along the pole sides.

[0019] Substantially at the end of the translation strokes, needles canbe rotated with respect to longitudinal axis 108 (as shown in FIG. 1) ofthe core, in order to place the wires across the end faces of the poles.It should be noted that, in an alternative embodiment (not shown), theterm rotational movement may indicate that the core may be rotatedaround axis 108, while the needles remain stationary. At the end of therotations, the needle tips may be aligned with adjacent slots, wherethey may start opposite translation strokes.

[0020] Such a combination of translational and rotational motions placessingle turns of coils completely around the poles. The combination ofmotions needs to be repeated for a number of times equal to the numberof turns. Furthermore, the combination of motions also must be repeatedfor the number of layers of turns that are wound around the poles.

[0021] Suitable criteria that may dictate when the needle should bemoved along the radii, and how long the increments should be, includethe thickness of the wire, the dimensions and winding requirements ofthe poles, etc. A correctly obtained stratification is of greatimportance for guaranteeing that the turns are tightly wound, and of thesame length. Orderly stratification of the wires achieves more compactcoils, which ultimately means that more turns may be wound in the sameslot space, while preventing turns of adjacent poles from interferingwith each other.

[0022] In some embodiments, the invention may provide apparatus andmethods for winding wire coils on dynamo-electric components inaccordance with the principles of the invention. In some of theseembodiments, apparatus according to the invention may include animproved drive method. An improved drive method is disclosed concerningthe generation of the needles stratification motion which is performedto regularly distribute the turns along the height of a pole in a dynamoelectric component.

[0023] Illustrative examples of embodiments in accordance with theprinciples of the present invention are shown in FIGS. 1-4.

[0024]FIG. 1 is a partial cross-sectional view of an apparatus forwinding wire with the stratification motion discussed herein (the corehas been removed from FIG. 1 for reasons of clarity).

[0025] As shown in FIG. 1, winding shaft 100 is driven to move withbackwards and forwards translation motions 102 and 104 by a kinematicassembly (not shown) mounted within casing 106. The kinematic assembly,which is well-known in the art, within casing 106 is preferablypositioned to the left with respect to the view shown in FIG. 1.Backwards and forwards translation motions 102 and 104 are parallel toaxis 108.

[0026] Winding shaft 100 is also provided with oscillatory rotationmotions 110 and 112. Rotation motions 110 and 112 may be performed aboutaxis 108. Rotation motions 110 and 112 accomplished by winding shaft 100are preferably implemented in a predetermined time relation or positionrelation with respect to translation motions 102 and 104.

[0027] As regards the stratification motion, a certain increment ofstratification motion may be accomplished once winding shaft 100 hascompleted a sequence of backwards and forwards translational motions 102and 104 and two opposite rotation motions 110 and 112—i.e., followingeach completed cycle. This preferably corresponds to the needles havingmoved once around a respective pole that they are winding in order toform a turn.

[0028] Rotational and translation motions and the mechanisms forgenerating them are similar to those described in commonly-assigned U.S.Pat. Nos. 4,858,835 and 5,484,114, and stratification motions and themechanisms for generating them are described in commonly-assigned U.S.Provisional Patent Application Nos. 60/148,473, filed Aug. 12, 1999, and60/214,218, filed Jun. 23, 2000, and in commonly-assigned U.S. patentapplication Ser. No. 09/632,281, filed Aug. 4, 2000, all of which arehereby incorporated by reference herein in their entireties.

[0029] In this embodiment, rotational motions 110 and 112 may beobtained by a rocking motion of winding shaft 100 driven by the rotationof gear wheel 114. Gear wheel 114 is preferably driven by kinematicmechanisms such as those described in the above-cited patents andapplications, and discussed above with respect to translation motions.The kinematic assembly may be used to coordinate the translation motionsdescribed above and the rotation motions. In the alternative, thekinematic assembly may be used to coordinate the translation motionswith the rotation of the core, as described above with respect to thealternative embodiment of the invention.

[0030] Gear 114 meshes with gear 116. Gear 116 is preferably mounted onbearings 119 (as shown in FIG. 2) of casing 106. The interior portion ofgear wheel 116 is preferably hollow and the interior of gear 116 isprovided with key 117. Key 117 of gear 116 is received in a keyway 171of winding shaft 100. Winding shaft 100 passes through the hollowinterior portion of gear 116, thereby coaxially assembling gear 116 withwinding shaft 100. Consequently, the rotation of gear wheel 116 causedby gear wheel 114 is imparted to winding shaft 100—i.e., in the form ofrotation motion 110 and 112. Additionally, it should be noted thatwinding shaft 100 is also able to accomplish translation motions 102 and104 as referred to above with respect to U.S. Pat. Nos. 4,858,835 and5,484,114.

[0031]FIG. 2 is a partial cross-sectional view of portion 118 of FIG. 1.As shown in FIG. 2, gear 116 preferably meshes with gear 202. Gear 202is preferably disposed on bearing shaft arrangement 205. Bearing shaftarrangement 205 may be carried by extension 203 such that it is rigidlyconnected to casing 106. Gear 202 may also mesh with crown 207 of ring204. Ring 204 is preferably idle on bearings 209 that are supported bycasing 106. In addition to meshing with gear 202, crown 207 also mesheswith gear 206. Gear 206 is preferably idle on bearing shaft arrangement211. It should be noted that bearing shaft arrangement 211 is preferablycarried by support gear 208. Gear 206 preferably meshes with gear 210,which is preferably fixed to the rear of drive tube 212.

[0032] Drive tube 212, which serves as a drive member for the radialmovements of needle 310 as will be explained, is preferably hollow sothat it may be assembled coaxially on winding shaft 100 and so that itmay contain winding shaft 100 and the wire.

[0033] As mentioned above, rotation of gear 114 imparts motions 110 or112 to winding shaft 100. Rotation of gear 114 causes winding shaft 100to rotate because of the connection obtained between gear 114 and keyway171. Winding shaft 100 has key 117 received in gear 116, fortransmission of rotations between gear 116 and winding shaft 100.

[0034] Gear 208 is preferably mounted on bearings 213. Bearings 213 arepreferably supported by drive tube 212. Gear 208 preferably meshes withgear 214, which is mounted on shaft 216.

[0035] Motor belt arrangement 120 (as shown in FIG. 1) is preferablymounted on the opposite end of shaft 216. In some embodiments, motorbelt arrangement 120 may include a belt wheel 160 driven by a belt 162,which derives motion from a pinion wheel of a motor 164.

[0036] Gear 214 may be substituted with other mechanisms. For example,in some embodiments, gear 214 may be a worm gear 215 as shown in FIG. 2aand described in the following.

[0037] As shown in FIGS. 1 and 2, ring 204, crown 207, gear 208, drivetube 212, and gear 210 are coaxial with respect to winding shaft 100 andlongitudinal axis 108. Also shown in FIGS. 1 and 2, bearing 213 issupported by drive tube 212.

[0038] In an alternative embodiment, bearing 213 may be supported bycasing 106. Casing 106 is preferably provided with a cut-out portion218, thereby allowing gear 214 to mesh with gear 208.

[0039] The gear ratios between gear 116 and gear 202, gear 202 and crown207, crown 207 and gear 206, and gear 208 and gear 210 are such thatdrive tube 212 preferably rotates in synchronism and for the same amountof rotation—i.e., rotation motions 110 and 112—with respect to themotion imparted on winding shaft 100. As described previously, themotion imparted on winding shaft 100 is caused by the rotation of gear114. Drive tube 212 is preferably supported on bearings 122 of casing106, thereby allowing the rotation of drive tube 212. Persons skilled inthe art will appreciate that achieving the transmission of rotationmotions 110 and 112 to drive tube 212 can be practiced by other than thedescribed embodiments, which are presented for purposes of illustrationand not of limitation.

[0040] Referring back to FIG. 1, portion 128 of drive tube 212preferably has angular key portions 129. Key portions 129 are receivedin a keyway of end tube 124. These keyways are preferably long enough toallow end tube 124 to accomplish translation motions in directions 102and 104 together with winding shaft 100 while still accommodating keyportion 129.

[0041] End tube 124 is preferably mounted on bearings 131, which areassembled coaxially with respect to winding shaft 100. Bearings 131 areinterposed between winding shaft 100 and end tube 124.

[0042] As described above in the summary of the invention, the winderaccomplishes an additional rotation motion around axis 108 with respectto winding shaft 100. This additional rotational motion is preferablyimplemented by causing an additional rotation of end tube 124. Thisadditional rotation motion is additional to the initial rotation motionimparted to drive tube 212 by gear 116 (through gear 202, ring 204, gear206, crown 207, and bearing shaft arrangement 211 to reach drive tube212). Thus, end tube 124, which is constrained to move translationallywith winding shaft 212 parallel to directions 102 and 104 (as will beexplained in more detail below), and which moves rotationally withrotation motions 110 and 112 of winding shaft 100 because of motionsgenerated by gears 114 and 116, is also capable of accomplishingadditional relative rotations around axis 108 with respect to windingshaft 100. These additional rotations, which are implemented by gear214, cause the rotation of drive tube 212 as well as end tube 124.

[0043]FIG. 3 is an enlargement of portion 126 of FIG. 1. FIG. 4 is aview from directions 4-4 of FIG. 1. FIG. 4 also shows a stator 406 withpoles 404 being wound by needles 310, 311, and 312.

[0044] As shown in FIG. 3, end tube 124 is preferably flanged. Theflange on end tube 124 allows it to be attached to support cylinder 302by means of bolts (only the axes of the bolts are shown). In this way,support cylinder 302 moves together with end tube 124 both intranslation motions 102 and 104 and in rotation motions 110 and 112.Support cylinder 302 is provided with spiral groove 305 (also shown withdashed line representation in FIG. 4). As previously described, end tube124 is capable of accomplishing additional rotations with respect towinding shaft 100. Consequently, the additional rotation of end tube 124may cause spiral groove 305 to accomplish the same additional rotationwith respect to winding shaft 100.

[0045] Guide member 308 (it should be noted that the lead line guidemember 308 is shown as connected to the cap of guide member 308) maysupport a plurality of needles, such as needles 310, 311, and 312 (asshown in FIG. 4). Needles 310, 311, and 312 have main trunk portions315, 316, and 317, respectively. In the same manner, needles 310, 311,and 312 have distal portions 320, 321, and 322.

[0046] The main trunk portions 315, 316, and 317 of needles 310, 311,312 are received in respective ways of guide member 308. As shown inFIGS. 3 and 4, the sides 402 and bottom 324 of the ways of guide member308 support the trunk portions and the distal portions of needles 310,311, and 312. Because the needles are fully supported, the positions ofneedles 310, 311, and 312 may be maintained even under the action of theapplied forces—e.g., the tension of the wire. Furthermore, bottom 324(shown in FIG. 3) of guide member 308 preferably provides a low-frictionsurface, thereby allowing the radial stratification movementperpendicular to axis 108 of the needles.

[0047] Each needle preferably has a bore—e.g., bore 312 of needle 310.The bores of every needle are preferably in a parallel plane 326perpendicular to longitudinal axis 108. In the area around longitudinalaxis 108, sectors of trunk portions 315, 316, and 317 must be indifferent planes and cross over each other as shown in FIGS. 3 and 4.Common plane 328 containing the bottom 324 of guide member 308 is nearerto the end of winding shaft 100 than the nearest one of trunk portions315, 316, and 317 is to the end of winding shaft 100. As shown in FIG.3, since common plane 328 is nearer to the end of the winding shaft thanany one of trunk portions 315, 316, and 317, spacing 330 is leftallowing the passage of wire 382 through winding shaft 100 and bore 325.

[0048] As shown in FIG. 4, needles 310, 311, and 312 preferably becomenarrower in trunk portions 315, 316, and 317, respectively, adjacent tothe extensions from poles 404, thereby allowing needles 310, 311, and312 to pass in the space between poles 404. To give needles 310, 311,and 312 substantial strength where they become narrow, the configurationof the needles is extended in a direction parallel to axis 108. Theneedles may be extended such that the dimension of the needles in thedirection parallel to axis 108 is at least twice the narrow dimension ofthe needles that passes between the poles.

[0049] The distal portion of each needle is provided with a respectivepin—i.e., pin 410 for needle 310, pin 411 for needle 311, and pin 412for needle 312 -with the extreme portion received within spiral groove305 to engage the delimiting side walls of spiral groove 305. Guidemember 308 is provided with windows 332, thereby allowing the pins 410,411, and 412 to protrude to spiral groove 305. Spiral groove 305develops as a spiral from the smallest radius near axis 108, and extendsfor a predetermined number of turns as shown in FIG. 4. Pins 410, 411,and 412 are each in distinct angular positions with respect to eachother in spiral groove 305. Each pin will travel along a respectiveportion of spiral groove 305. The radius growth of the spiral should besufficiently gradual to guarantee an unobstructed travel of the pinsthrough spiral groove 305. As will be more fully described in thefollowing, rotation of spiral groove 305 around axis 108 by rotatingsupport cylinder 302 causes spiral groove 305 to move with respect topins 410, 411, and 412. Consequently, this movement may cause the radialstratification motion of the needles.

[0050] It should be noted that the respective portions of spiral groove305 relating to where the pins travel are preferably long enough toaccomplish the radial stratification motions required by the needle orneedles.

[0051] Bottom 324 of guide member 308 is preferably fixed to windingshaft 100 by means of locking bush 334. Locking bush 334 is preferablythreaded to the interior of winding shaft 100 by means of thread 335.Key member 336 (shown in section) preferably has radial arms 337 atequidistant angular positions for engaging in equidistant ways oflocking bush 334 and bottom 324 of guide member 308. Portions of keymember 336 are two of the radial arms which are received in respectiveways of locking bush 334 and guide member 308. By pushing locking bush334 against key member 336 (through the pull generated by thread 335 andbecause of the presence of the radial arms), guide member 308 ispreferably secure to winding shaft 100. When locking bush 334 is pulledthrough thread 335, locking bush 334 pushes guide member 308 againstaxial bearing 340, which is shouldered against end tube 124. Thiscombination causes guide member 308 to move with winding shaft 100 suchthat the needles preferably accomplish the translation motion parallelto directions 102 and 104 and the rotation motions 110 and 112.

[0052] The presence of axial bearing 340 allows the additional rotationsof end tube 124 and support cylinder 302 with respect to winding shaft100 and guide member 308. The push on axial bearing 340 finds a reactionin axial bearing 220. In turn, axial bearing 220 (as shown in FIG. 2) isshouldered by bush 222 (also shown in FIG. 2). The reaction passesthrough end tube 124 mounted between axial bearings 340 and 220. Bush222 is shouldered against the extreme of external keyway 171 present onwinding shaft 100. In this way, end tube 124 is fixed longitudinallyalong winding shaft 100 and, therefore, end tube 124 translateslongitudinally with winding shaft 100. End tube 124 is able to translatewith winding tube 100 (and to rotate with drive tube 212) at leastbecause end tube is supported with respect to casing 106 by bush 130 andwith respect to drive tube 212 by bearings 224.

[0053] When stratification motion in directions 345 and 346 needs to beimparted to the needles, motor belt unit 120 can be activated causing arequired amount of turning of gear 214. This causes the additionalrotation described above to end tube 124 by way of gear 208 and drivetube 212. Spiral groove 305 may turn due to this additional rotation andcause movement of pins 410, 411, and 412 in directions 345 and 346.Needles 310, 311, and 312 may move in directions 345 and 346 as aconsequence of the movements of the pins in directions 345 and 346.Therefore, end tube 124 and support cylinder 302 (provided with spiralgroove 305) may move with the same rotation motions 110 and 112 ofwinding shaft 100 and may also have an additional rotation (in either ofdirections 345 and 346 as required) generated by motor drive arrangement(motor belt unit) 120 when the stratification motions of the needles isrequired.

[0054] The motor of belt arrangement 120 is preferably programmable andcontrollable with external feedbacks so that rotation imparted to thespiral groove 305 (to cause the stratification motion) may occur atpredetermined timing or with a predetermined relation to thetranslational and rotational motions of winding shaft 100.

[0055] When motor drive 120 is not activated to cause the additionalrotation which causes the stratification motion, it may be implementedto act as a brake to dampen accidental rotation that may be caused togear 210. Such accidental rotations may cause unwanted stratificationmotion of the needles in directions 345 and 346.

[0056] A motorized worm gear 215 (as shown in FIG. 2a) engaging gear 208may substitute the motor belt arrangement 120 and gear 214 to achievethe brake action needed to prevent the accidental rotations of gear 208.The tooth characteristics of worm gear 215 would preferably opposeaccidental rotations of gear 208.

[0057] In conclusion, winding shaft 100 is able to make the needlesaccomplish the required translational and rotational motions referencedwith directions 102, 104, and 110, 112.

[0058] Thus, a stator core winding apparatus and methods preferablycapable of rotational and translation movements with respect to thepoles of the dynamo-electric core is provided. Persons skilled in theart will appreciate that the principles of the present invention can bepractices by other than the described embodiments, which are presentedfor purposes of illustration and not of limitation, and the presentinvention is limited only by the claims which follow.

What is claimed is:
 1. A winder for winding a wire onto a coil supportportion of a dynamo-electric core, the winder having a centrallongitudinal axis, the winder comprising: a needle for dispensing thewire; a first member; a second member; a translation assembly thatproduces translational movement of the first member and the needleparallel to the longitudinal axis; a rotation assembly that producesrelative rotational movement between the core and the needle; and astratification assembly movably coupled to the second member whichcauses a relative rotational movement between the second member and thefirst member, wherein the relative rotational movement between thesecond member and the first member produces radial movement of theneedle and the relative rotational movement between the second memberand the first member is independent from the relative rotationalmovement produced by the rotation assembly.
 2. The winder of claim 1,wherein the second member comprises an end tube, the end tube beingconstrained to move translationally with the first member.
 3. The winderof claim 2, wherein the first member comprises a winding shaft, thesecond member further comprises a drive tube, the end tube beingconstrained to rotate with the drive tube and wherein the relativerotational movement between the first member and the second member isimplemented on the end tube and the drive tube with respect to thewinding shaft.
 4. The winder of claim 1, wherein the first membercomprises a winding shaft.
 5. The winder of claim 1, wherein the firstmember houses a portion of the needle.
 6. The winder of claim 1, whereinthe translation assembly produces translational movement by a kinematicmechanism.
 7. The winder of claim 1, wherein the winder furthercomprises a plurality of needles.
 8. The winder of claim 7, wherein thestratification assembly produces radial movement of each of theplurality of needles substantially simultaneously.
 9. The winder ofclaim 1, the stratification assembly comprising a motor for producingthe radial movement.
 10. The winder of claim 9, wherein the motor isadapted to provide a dampening effect to limit unwanted radial movement.11. The winder of claim 1, the stratification assembly comprising a wormgear for producing the relative rotational movement between the secondmember and the first member.
 12. The winder of claim 11, wherein theworm gear is adapted to provide a dampening effect to limit unwantedradial movement.
 13. The winder of claim 1, wherein the second member iscoaxial with the first member.
 14. The winder of claim 1, wherein thefirst member and the second member share a common longitudinal axis. 15.The winder of claim 1, wherein the translational movement, the relativerotational movement between the core and the needle, and the relativerotational movement between the second member and the first member areprogrammable.
 16. The winder of claim 1, wherein the second membercomprises a spiral groove.
 17. The winder of claim 16, wherein therelative rotational movement between the first member and the secondmember is implemented on the spiral groove with respect to the needle.18. The winder of claim 1, wherein the stratification assembly comprisesa guide member for supporting the needle.
 19. The winder of claim 1, theneedle comprising a first dimension parallel to the longitudinal axisand a second dimension perpendicular to the longitudinal axis, thesecond dimension for allowing the needle to pass between two poles ofthe dynamo-electric core, wherein the first dimension is at least twicethe thickness of the second dimension.
 20. The winder of claim 1,further comprising a gear transmission, and wherein the rotationassembly is coupled by the gear transmission to at least one of thefirst member and the second member.
 21. The winder of claim 20, whereinthe gear transmission is hollow, and wherein at least one of the firstmember and the second member are circumferentially surrounded by thegear transmission.
 22. The winder of claim 1, wherein the rotationassembly is adapted to rotate the core about the longitudinal axis. 23.The winder of claim 1, wherein the rotation assembly is adapted torotate the second member and the needle about the longitudinal axis. 24.A method for winding a wire onto a coil support portion of adynamo-electric core using a winder having a central longitudinal axis,a first member and a second member, the method comprising: winding thewire along the coil support in a direction parallel to the longitudinalaxis; winding the wire across a face of the coil support in a firstrotational direction about the longitudinal axis; winding the wire alongthe coil support opposite the parallel direction; winding the wireacross a second face of the coil support in a second rotationaldirection about the longitudinal axis, the second rotational directionbeing opposite the first rotational direction; and stratifying the wirealong the coil support in a radial direction perpendicular to thelongitudinal axis by generating relative rotational movement between thefirst member and the second member independently of winding the wireacross the first and second face.